SOLUTION: Please solve this formula for the indicated variable: I=E/R+r for R Thank you!!1

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Question 88354: Please solve this formula for the indicated variable:
I=E/R+r for R
Thank you!!1
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
I=E%2F%28R%2Br%29
Since a%2Fb=c%2Fd means that ad=bc, it follows that
I%2F1=E%2F%28R%2Br%29 means that I%28R%2Br%29+=+E%2A1

Remove parentheses:
IR%2B+Ir=+E

Get the R term alone on the left side by subtracting Ir from each side:
IR+=+E-Ir

Divide both sides by I in order to undo the multiplication of I times R:
%28IR%29%2FI=+%28E-Ir%29%2FI
R+=+%28E-Ir%29%2FI

R^2